SMA SC 100LV-560HE User Manual

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Central inverter

SUNNY CENTRAL 100LV - 560HE

Installation Guide

SC125_560HE-IEN083220 | 98-4004820 | Version 2.0

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SMA Solar Technology AG Table of Contents

Table of Contents

1 Notes on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.3 Storage of the Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2.1 Personnel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2.2 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2.3 Special Hazards of Photovoltaic Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2.4 Electrical Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2.5 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2.6 Disconnecting the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.2.7 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3 Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.1 Transport. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.1.1 Transport Possibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.2 Identifying the Sunny Central . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2.1 Checking for Transport Damages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2.2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4 Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1 Installation Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1.1 Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1.2 Distance to the wall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1.3 Inverter Protection Rating / EMC / Sound Levels . . . . . . . . . . . . . . . . . . . . . 20

4.1.4 Electrical Operating Room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.1.5 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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Table of Contents SMA Solar Technology AG

4.2 On-Site Inverter Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.2.1 Remove transport locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.2.2 Mechanical coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.2.3 Anchorage to the ground or wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.1 Internal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.1.1 Power cabling between sine filter and transformer . . . . . . . . . . . . . . . . . . . . 30

5.1.2 HE version: Power cable connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.1.3 PE connection between AC cabinet and DC / inverter cabinet . . . . . . . . . . 36

5.1.4 Control lines at the transfer terminal strip . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.1.5 Connecting Sunny Central Control to power unit . . . . . . . . . . . . . . . . . . . . . 38

5.1.6 Internal control lines of the power unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.1.7 Communication for insulation monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.1.8 Installing internal temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.1.9 Team cabling (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

5.1.10 EVR Cabling (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5.1.11 Sunny Central for installation near the sea (optional). . . . . . . . . . . . . . . . . . 46

5.2 External Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5.2.1 AC grid-connection standard devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5.2.2 AC grid connection of HE versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5.2.3 AC grid connection with MV stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.2.4 Connection PE rail with HE version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5.2.5 AC control voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

5.2.6 Handling the Connection Terminals Control voltage. . . . . . . . . . . . . . . . . . . 59

5.2.7 DC connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

5.2.8 Team Power Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5.2.9 External messages and signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

5.2.10 Sensors and digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

5.2.11 Shield Contact Handling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

5.2.12 Serial Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

5.2.13 Emergency-stop cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

5.2.14 Surge protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

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SMA Solar Technology AG Table of Contents

6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

6.1 Requirements for commissioning . . . . . . . . . . . . . . . . . . . . . . . . 73

6.2 Cabling Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

6.2.1 Cabling Check AC Grid Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

6.2.2 Cabling Check DC Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

6.2.3 Cabling Check Serial Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

6.2.4 Emergency-stop cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

6.2.5 Settings for thermostats and hygrostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

6.3 Switch On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

7 Appendix A: Transport instructions . . . . . . . . . . . . . . . . . 76

7.1 Overview of transport possibilities. . . . . . . . . . . . . . . . . . 77

8 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

9 Appendix A - Mechanical data . . . . . . . . . . . . . . . . . . . . . 81

9.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

9.2 Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

10 Appendix B - Minimum Clearance . . . . . . . . . . . . . . . . . . 83

11 Appendix C - Air volume . . . . . . . . . . . . . . . . . . . . . . . . . . 85

12 Appendix D - Cable cross section and Torque. . . . . . . . . 86

12.1 DC connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

12.2 AC connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

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Table of Contents SMA Solar Technology AG

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SMA Solar Technology AG Notes on this Manual

1 Notes on this Manual

1.1 Validity

This manual describes the transport, the installation and the commissioning of SMA central inverters of the following types:

• Sunny Central 100LV (SC 100LV)

• Sunny Central 125LV (SC 125LV)

• Sunny Central 150 (SC 150)

• Sunny Central 200 / 200HE (SC 200 / SC 200HE)

• Sunny Central 250 / 250HE (SC 250 / SC 250HE)

• Sunny Central 350 / 350HE (SC 350 / SC 350HE)

• Sunny Central 500HE (SC 500HE)

• Sunny Central 560HE (SC 560HE)

1.2 Target Group

This manual is addressed to the installer and the operator of a PV system equipped with Sunny Centrals.

1.3 Storage of the Manuals

All manuals for the Sunny Central as well as for the installed components must be stored together with the installation documentation and must be accessible at all times. The documents listed below are included in the delivery of your Sunny Central. The following information is contained in these documents.

• Installation guide: Mounting and Installation of the Sunny Central

• User manual: Operation of the Sunny Central and the Sunny Central Control

• Circuit diagrams: Variant circuit diagram of the Sunny Central

• Commissioning report: Checklist for commissioning. After successful commissioning, the commissioning report has to be sent to SMA Solar Technology AG.

• Documentation of

accessories:

Installation Guide SC125_560HE-IEN083220 7

You will find documentation for optional accessories or optional equipment for the Sunny Central (e.g. installation near the sea) at www.SMA.de.

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Notes on this Manual SMA Solar Technology AG

1.4 Symbols Used

The following types of safety warnings as well as general information appear in this document:

DANGER!

"DANGER" indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING!

"WARNING" indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION!

"CAUTION" indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

ATTENTION!

"Attention!" indicates a situation that can result in property damage if not avoided.

Information Information provides tips that are valuable for the optimal installation and operation of

your product.

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SMA Solar Technology AG Safety

2 Safety

2.1 Appropriate Usage

The Sunny Central is a solar inverter. It is used to feed solar energy converted by solar modules using photovoltaics into a low- or medium-voltage grid.

Principle of a grid-connected solar power system with a Sunny Central

Sunny Central

The standard Sunny Central is equipped with a low-voltage transform er a nd f eed s in to the l ow- vol tag e grid.

Sunny Central LV

The Sunny Central LV feeds into the low-voltage grid. It is suitable for the connection of modules with low voltage.

Sunny Central HE

The Sunny Central HE is a high efficiency photovoltaic inverter. It is not equipped with a low-voltage transformer. The Sunny Central HE requires a suitable external medium-voltage transformer through which it can feed into the grid.

Sunny Central MV

The MV stations are medium-voltage stations. In an MV station, two Sunny Central HEs feed into a shared medium-voltage transformer. The Sunny Central MV feeds into the medium-voltage grid.

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Safety SMA Solar Technology AG

2.2 Safety Instructions

Faults which affect the safety of the device must be immediately rectified. Unauthorized modifications and the use of spare parts not recommended by SMA Solar Technology may cause fire, material damage and electrical shocks. Unauthorized personnel must not have access to the equipment.

Warning signs must always be clearly readable and immediately replaced if damaged.

2.2.1 Personnel

Only qualified technical personnel may perform any and all work on the Sunny Central. "Qualified" means that the personnel must possess training relevant to the activity performed.

For commissioning and operation of the Sunny Central, the personnel must be familiar with the content of the Sunny Central installation guide and user manual. In particular, the safety instructions must be followed.

2.2.2 Installation

The mounting requirements described in the installation guide must be observed. The installation has to be carried out in an electrical operating room to guarantee optimal noise and fire protection.

The Sunny Central product line has been type-tested and approved for installation in an industrial environment in accordance with the industry-standard EMC limits (EMC = Electro Magnetic Compatibility). Devices for installation in households are available upon request.

For the installation, the following points have to be taken into consideration:

• Separate airflow of the supply and exhaust air of the Sunny Central from other ventilation

systems to avoid the spread of smoke in the event of fire.

• An appropriate escape route must be ensured.

• An appropriate sound insulation (see Technical Data) must be ensured.

• The EMC specifications must be observed (see Technical data)

WARNING!

Smoke in electrical areas of operation

We recommend the installation of a smoke detector inside the electrical operating room which con trols the external emergency- stop s witch of the devic e and sw itche s off the Sunny Central in the event of smoke.

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SMA Solar Technology AG Safety

2.2.3 Special Hazards of Photovoltaic Systems

Photovoltaic systems have special characteristics representing special hazards that are described here:

• An active power source is connected. Depending on the operating mode there may be voltage

present, either from the photovoltaic generator and/or the Sunny Central. This is especially important to note when disconnecting parts of the system

• Very high DC voltages are present (no zero-cros sing) that, in the case of a fault or inappropriate

use of fuses or plugs, may lead to arcing.

• The short-circuit current of the photovoltaic generator is only slightly more than the maximum

operating current and is also dependent on the level of solar irradiation. If a short-circuit occurs in the system, the available fuses are not guaranteed to switch off.

• The grid structure of the PV generator is usually an IT grid, i.e. a non-grounded grid that could

become unintentionally grounded if a ground fault occurs.

• A highly branched generator may be difficult to disconnect if a fault develops (e.g. short-circuit).

In add iti on, we r eco mmen d th e us e of ext ern al D C cir cui t br eak ers fo r di sco nne cti ng t he i nve rte r and/or the DC main cables / Sunny String monitors (DC circuit breakers are optionally available). At every DC input, an easily accessible DC circuit breaker should be installed (for further information see pre-standard VDE 0100, part 712 and VDI guidelines 6012).

2.2.4 Electrical Connection

The electrical connection must be carried out according to the installation guide, the relevant circuit diagram and the technical data of the device.

Ensure the grid connection cable for grid feeding is fused at the nominal current indicated on the type plate. If the specified nominal current differs from the nominal current of the fuse plug, the fuse plug having the next highest nominal current may be used.

Grid connection cable The grid connection cable for the internal power supply must be fused with the line circuit

breakers specified in the technical data.

Lightning protection

The devices are equipped with an internal overvoltage protection on the AC and DC sides. The desired protection level can only be achieved, if a lightning protection area concept exists for the installation building according to DIN VDE 0185-4, which means that at the building's entrance (transfer lightning protection area LPZ 1), lightning conductors or combined surge and lightning conductors are available among others which are not included in the delivery.

The combined surge and lightning protection for the signal inputs can be optionally ordered.

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Safety SMA Solar Technology AG

Emergency-stop

In installations with more than one device or with additional external emergency-stop switches, the emergency shut-off circuits have to be connected and tested for correct functionality, as described in the installation guide. The emergency shut-off circuit may only be supplied with voltage from a device.

Emergency shut-off circuit

• The emergency shut-off circuit may only be supplied with power from a single Sunny Central.

• Set the bridges at the emergency-stop terminal strip of the device into correct position.

2.2.5 Power Supplies

WARNING!

Risk of lethal electric shock!

High voltages are present in the device.

• The protective ground connection must be made before the external voltage is switched on.

• At the AC grid connection terminal, the nominal voltage, frequency and the righthand rotary field have to be maintained.

• Before inserting the DC input fuses (internal or external), the correct polarity and earth fault protection of the inputs must be ensured. The fuses may only be inserted or removed under load-free conditions and when using the appropriate personal protective equipment and fuse carriers.

• In the case of inserted DC fuses (internal or external), reverse voltage is applied to all externally connected DC main distributors and DC sub-distributors (Sunny String Box) as well as the team device via the bus bar in the Sunny Central.

• The doors must remain closed when connecting the supplies!

Requirements for switching on the external power supplies

• All connections have been carried out according to the installation guide and the circuit diagram.

• The protective ground connection for grid feed-in and for internal power supply has been made.

• The device has been switched off. The key switch is in the "stop" position and the main switches are switched off.

• The DC input fuses (internal and external) are pulled and the protection against accidental contact (Plexiglas covers) is installed. For team operation on both devices.

• The nominal voltage, frequencies and the right-hand rotary field are maintained (see device technical data).

• The polarity of the DC voltage at the inputs/fuse inputs (device dependent) has been checked.

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SMA Solar Technology AG Safety

• The polarity of the DC voltage at the inverter input/team input (device dependent) has been checked.

• The photovoltaic generator has been checked with an insulation test to ensure that there is no ground fault.

Sequence for switching on the external power supplies

• Grid voltage for the grid feed-in

• Grid voltage for internal power supply

• DC voltage from the photovoltaic generator

• DC voltage for team operation (optional)

2.2.6 Disconnecting the device

External disconnection of the device must always occur under load-free conditions. The device must be switched off in order to do this, the key switch must be in the “Stop” position.

DANGER!

Risk of lethal electric shock!

Work on the Sunny Central may only be performed after switching off the power to the unit. The VDE regulations must be followed.

• Disconnection (also team device)

• Secure against re-connection

• Verify that the installation is free of voltage

• Ground and short the unit if necessary (not on the DC side)

• If necessary, cover or protect against accidental contact with any neighboring voltage carrying components

The following power supplies must be disconnected:

• Grid voltage for the grid feed-in

• Grid voltage for internal power supply (optional)

• DC voltage from the photovoltaic generator

• DC voltage for team operation (optional)

• If necessary, additional external voltages (e.g. emergency-stop)

Simply switching off the main AC and DC switches is not sufficient to ensure proper disconnection of the device. The main switches only separate the power circuit from the grid and the photovoltaic generator.

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Safety SMA Solar Technology AG

DANGER!

Risk of lethal electric shock!

Dangerous accidental-contact voltages can be present in the Sunny Central even when the main AC and DC switches are switched off!

• After switching off the Sunny Central, wait a minimum of 5 minutes.

The disconnection of the DC voltage is carried out by the internal or external DC input fuses or, if available, external circuit breakers. The disconnection with the DC input fuses has to be carried out under load-free conditions.

The device contains capacitors on the DC and AC sides that discharge when the device is disconnected. After switching off, there are dangerous accidental-contact voltages present within the device for several minutes. If there is a fault in the device, these voltages may also remain present for a longer period of time. For these reasons, wait a minimum of 5 minutes after switching off before opening the device.

WARNING!

Risk of lethal electric shock!

• To avoid arcing, the load-free status must be checked with a current probe (using a clamp-on ammeter) before removing the DC input fuses. The fuses may only be pulled/inserted using the personal protective equipment and fuse carriers.

• In the case of inserted DC fuses (internal or external), reverse voltage is applied to all externally connected DC main distributors and sub-distributors (Sunny String Monitor) as well as the team device via the the bus bar in the Sunny Central.

• In the event of a failure, the DC contactors may carry a life-threatening DC voltage!

• The discharge time of the capacitors is longer than 5 minutes.

The Plexiglas cover must be removed in order to pull the fuses. The cover must never be removed from both poles at the same time. After the cover has been removed from one pole, and the fuse has been pulled, the cover must be immediately re-installed before removing the cover from the second pole. The covers must always remain in place when fuses are not to be pulled.

Disconnection of system components without risk In addition, we recommend the use of external DC circuit breakers for disconnecting the

inverter and/or the DC main cables / Sunny String monitors (DC circuit breakers are optionally available). Even in the case of faults or fire, this allows system components to be safely disconnected.

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SMA Solar Technology AG Safety

Team devices

WARNING!

Risk of lethal electric shock!

Before working on a team device, both devices must be disconnected.

If two devices in the team are connected, all necessary measures have to be taken to disconnect both devices. This especially applies to the DC inputs. The team contactor is not a reliable disconnection unit between the devices.

2.2.7 General Information

Hearing Protection

The device fans and the power unit create significant levels of operating noise. In addition to this, a fault in the device can lead to very high noise levels. For these reasons, we recommend the use of ear protection when in the vicinity of the device.

High noise levels in electrical operating rooms We rec omm end the use of e ar p rot ect ion whe n in the vic ini ty o f the Sunny Central electrical

operating room for extended periods.

Burns

Immediately after disconnecting the device, certain components can be very hot (e.g. fuses, transformer core, sine filter, heat sinks etc.) - depending on the operating conditions.

Safety gloves should always be worn when working near components that can be expected to be very hot.

High temperature of device components We recommend wearing safety gloves during all work on the device.

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Delivery SMA Solar Technology AG

3 Delivery

3.1 Transport

Only the transport methods described in the installation guide are permissible, follow the transport requirements in Appendix A.

The inverters consist of two switch cabinet units, the DC / inverter cabinet and the AC cabinet which are separately transported and installed on site.

The inverters and/or inverter units are delivered on pallets. Under standard delivery conditions, a forklift must be available. When unloading, the heavy-load markings mus t be g ive n du e co nsi der ati on.

3.1.1 Transport Possibilities

WARNING!

Heavy weight of switch cabinet units!

Danger of tipping during transport!

• The cabinet units must always be transported in an upright position.

• The center of gravity of the Sunny Central is indicated on the outside of the packaging.

Transport using a pallet truck or forklift

For the transport of the respective switch cabinet with pallet trucks or forklifts, the plinth panel can be unscrewed and in this way the fork of the pallet truck or lift can be put under the cabinet.

Both screws per plinth panel can be loosened with a TX30 torque key.

ATTENTION!

Damage to the Sunny Central through missing plinth panels

The plinth panels are essential for stable positioning of the switch cabinet. In the case of transport on a pallet, it is necessary to install the plinth panels. Otherwise there is the risk that the base will collapse under the weight of the switch cabinet.

Transport using a crane

Du e to the hea vy w eig ht o f th e sw itc h ca bin ets , th e trans por t with crane eyelets is only permitted under certain conditions. The inverters are therefore delivered without crane eyelets. Otherwise there is the risk of damaging the cabinet. Use an appropriate crane fork instead which can be put below the switch cabinet when the plinth panels are unscrewed.

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SMA Solar Technology AG Delivery

Transport using crane eyelets The transport of the switch cabinets with crane eyelets is not permitted as a standard means

of transport! In exc ept ion al c ase s, t he tran spo rt w ith cra ne e yel ets is p erm itt ed. In c ase of t ran spo rt u sin g

a crane, the following points have to be observed:

• Asymmetric weight distribution

•Heavy load.

• Most of the switch cabinet's weight is located in the rear area.

3.2 Identifying the Sunny Central

You can identify the Sunny Central using the type plate (see figure below). The type plate can be found on the inside of the door of the Sunny Central.

A B

A Type description of the Sunny Central with option key

B Version of the Sunny Central. "s" stands for "special version".

C Sunny Central Serial number

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Delivery SMA Solar Technology AG

Switch cabinet view of Sunny Central inverter cabinets

Switch cabinet view Sunny Central 150

Achtung!

Bei ausgeschaltetem Hauptschalter unter Spannung

Switch cabinet view Sunny Central 250 / 250HE

Switch cabinet view Sunny Central 350 / 350HE

Achtung!

Bei ausgeschaltetem Hauptschalter unter Spannung

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SMA Solar Technology AG Delivery

Switch cabinet view Sunny Central 500 / 560HE with EVR option (A)

Sunny Central MV station view

3.2.1 Checking for Transport Damages

Check the packaging and the device for any possible damage and compare the contents of the de liv ery wit h the de liv ery doc ume nta tio n. I n th e case o f da mag e to the device and/or unclear delivery contents, immediately contact SMA Solar Technology.

Transport security The devices are delivered in part units which do not reflect the protection class specified in

the technical data. The packaging offers an appropriate protection against humidity and damage.

3.2.2 Storage

Storage information The equipment may only be stored in rooms protected from dust and moisture.

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Mounting the Device SMA Solar Technology AG

4 Mounting the Device

Sunny Central Installation requirements Every Sunny Central has different individual installation requirements. These can be

ordered at any time from SMA Solar Technology and have to be observed for project planning and for the preparation of the installation site.

4.1 Installation Site Requirements

4.1.1 Foundation

The foundation must guarantee solid and safe positioning of the inverter. T he fou ndation must p rovid e the load-carrying capacity necessary to cope with the weight of the inverter. The inverter cabinet must be ins tal led on a lev el surf ace . Any existing unevenness, depress ions or s lopes m ust be c orr ect ed p rio r to installation.

4.1.2 Distance to the wall

When installing the inverter, appropriate distance to the wall for minimum passageways, escape routes and ventilation have to be observed. Corresponding information about the inverter type in question are included in the "Sunny Central Installation requirements" (separate document).

4.1.3 Inverter Protection Rating / EMC / Sound Levels

The Sunny Central is suitable for installation in a station located in a dry, dust-reduced environment according to protection rating IP20. With regard to the EMC emissions and the noise level, the Sunny Central inverter is designed for installation in an industrial environment.

Sunny Central installation location The Sunny Central inverter has to be installed in an electrical operating room.

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SMA Solar Technology AG Mounting the Device

4.1.4 Electrical Operating Room

For the installation and connection of the Sunny Central central inverters, observe DIN VDE 0100, part 729, part 731. The requirements for the electrical operating room for the installation of high voltage systems up to 1000 V as well as the requirements for passageways and escape routes are included here.

Minimum passageway in electrical operating rooms Observe the following points for a minimum passageway:

• With fully opened cabinet doors, a minimum passage width of 500 mm (escape route) must be maintained, see DIN VDE 0100 part 729, part 731.

• To maintain the minimum passageway requirements, the cabinet doors in an inverter sy ste m wi th two r ows of o ppo sin g ca bin ets (e.g. i nst all ati on i n a st ati on b uil din g) m ay only be opened on one side at a time.

MV Stations

The inverters of the HE series are usually installed in a concrete compact station, generally opposite as a "left" system and "right system". The installation has to be carried out in accordance with the VDE guidelines for a closed electrical operating room. In the figure below, a left-hand and right-hand system is shown.

Left system Right system

ADC cabinet B Inverter cabinet CAC cabinet

The AC cabinets should in any case be located at the partition wall to the transformer room in order to implement the AC power cabling to the transformer with short cable routes.

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Mounting the Device SMA Solar Technology AG

WARNING!

Smoke in electrical areas of operation

We recommend the installation of a smoke detector inside the operating room which controls the external emergency-stop connection of the device and which switches off the Sunny Central in the event of smoke.

In the following a schematic top view of the Sunny Boys located in a station is shown. The installation of the inverters is realized as a "right-hand system" (above) and "left-hand system" (below).

AC cabinet

Inverter cabinet

DC cabinet

Exit

Partition wall to the transformer room

AC cabinet

Inverter

DC cabinet

cabinet

4.1.5 Ventilation

For cooling the inverter, an appropriate air supply is necessary. To guarantee secure operation and the maximum of feed-in power, the allowable ambient temperature has to be observed.

The required air is drawn through the switch cabinet doors and is blown out via the roof or the back wall of the cabinet unit depending on the Sunny Central model Thus the devices can be installed directly adjacent to each other. The air needed as well as the appropriate distance to the wall can be found in the "Sunny Central Installation requirements" (separate document). Filters which clean the absorbed air are installed at the air inlet openings.

Should the required amount of air at the installation site of the Sunny Central be too low, a larger amount of air has to be made available (supply air bars, fan etc.) through construction measures.

The inlet air must satisfy the requirements of classification 3S2 (see table). The operation of the inverter is suited to a relative humidity of 15 … 95 %.

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SMA Solar Technology AG Mounting the Device

Air Quality Classification

Environmental requirements for fixed site use Class

3S1 3S2 3S3 3S4

a) Sand in the air [mg/m³] - 30 300 3000

b) Dust (suspended matter) [mg/m³] 0.01 0.2 0.4 4.0

c) Dust (fallout) [mg/m³] 0.4 1.5 15 40

Sites where dust fallout is kept to a minimum through appropriate measures.

Si tes whe re no sp ecial m eas ures ha ve been taken to reduce the sand or dust levels and which are far from sand and dust sources

Sites near to sand and dust sources x x

Sites in production halls where sand or dust is present, or sites in geographical locations in which the air can contain high quantities of sand and dust

Should the required air quality at the installation site of the Sunny Central not be available, corresponding requirements have to be made available (e.g. additional filters in the building supply air bar) through construction measures.

Ambient Conditions The following points for environmental conditions have to be observed:

• amount of fresh air

• required air quality,

• relative humidity

• Allowable ambient temperatures

xxxx

xxx

The waste heat (exhaust air) produced by the inverter has to be led away from the device to observe the maximum allowable ambient temperature and to ensure that the installation room is not unnecessarily heated up by the warm exhaust air. This takes place through the installation of an exhaust airflow (e.g. air channel).

CAUTION!

Risk of crushing and bruising by metal parts.

Remove the finger protection from the fan openings of the Sunny Central before installing the exhaust airflow.

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Mounting the Device SMA Solar Technology AG

According to the Sunny Central type, the exhaust air is lead out of the inverter through either the top or the rear. The Sunny Central types 350, 350HE, 500HE and 560HE have a combined exhaust airflow from the top and through the rear of the cabinet units. The method of exhaust is described in the "Sunny Central Installation requirements". With the exhaust airflow to the "rear" it is possible to lead the exhaust air directly out of the building through a weather protection bar installed inside the bu ild ing wal l. The i nve rte r ca n be ins tal led wit h the re ar t o the ope n buildi ng wall . To do t his , di sma ntl e the finger protection from the fan openings and provide a seal or a frame-like air scoop with a seal. Attach the air scoop to the building wall.

ATTENTION!

Operational reduction of the Sunny Central through overtemperature!

For an appropriate cooling of the inverter, the following points have to be observed:

• Obey the indicated amount of air.

• Clean the ventilation openings (filter pads) and the exhaust air bars at regular intervals.

• Expel the exhaust air separately out of the individual cabinet components in order to avoid thermal short circuit breaks.

Inverter specific details The inverter-specific models of the ventilation system are described in the Sunny Central

Installation requirements (separate document).

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SMA Solar Technology AG Mounting the Device

Overview of the ventilation openings

The exact position and size of the single air grills as well as for the supply air on the front side and the exhaust air on the roof or at the rear side of the switch c abinets, are displayed with some example cabinets.

The figures in this chapter show a "left system". Find more details about left and right systems in chapter 4.1.4 „Electrical Operating Room“ (21).

Sunny Central 100LV / Sunny Central 150 / Sunny Central 125LV / Sunny Central 200

Achtung!

Bei ausgeschaltetem Hauptschalter unter Spannung

AExhaust air BSupply air

Sunny Central 200HE

See figure above. The AC cabinet of the Sunny Central 200HE has 2 exhaust air openings; instead of 3 as shown in the figure above.

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Mounting the Device SMA Solar Technology AG

Sunny Central 250

AExhaust air BSupply air

Sunny Central 250HE

See figure above. The AC cabinet of the Sunny Central 250HE has 2 exhaust air openings; instead of 3 as shown in the figure above.

Sunny Central 350

Achtung!

Bei ausgeschaltetem

Bei ausgeschaltetem Hauptschalter

Hauptschalter unter Spannung

unter Spannung

AExhaust air BSupply air

Sunny Central 350HE

See figure above. The AC cabinet of the Sunny Central 350HE has 2 exhaust air openings; instead of 4 as shown in the figure above and 2 supply air openings instead of 4 as shown in the figure above.

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SMA Solar Technology AG Mounting the Device

Sunny Central 500HE / Sunny Central 560HE

B B

AExhaust air BSupply air CEVR option

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Mounting the Device SMA Solar Technology AG

4.2 On-Site Inverter Installation

The Sunny Centrals consist of two switch cabinet units, which are electrically and mechanically connected on site. Make sure that both switch cabinets have the same serial number. You will find the serial number on the type plate or on the transport packaging of the Sunny Central switch cabinet.

After both switch cabinets have been installed next to each other, the transport locks of the transformer have to be removed, the seals have to be inserted and the individual cabinets have to be mechanically and electrically connected for the final mounting in the electrical operating room. All necessary materials required for the connection of the switch cabinets are included in the delivery.

4.2.1 Remove transport locks

Remove the transport locks. In some Sunny Centrals, the transfomers and the sine filter are

secured with transport locks on the cabinet. The transport lock is a metal angle which is fixed at the switch cabinet side.

The following table shows which type is delivered with transport locks.

Sunny Central Transport lock Transformer Transport lock Sine filter

100LV yes no 125LV yes no 200 yes no 200HE no no 250 yes no 250HE no no 350 yes no 350HE no no 500HE no yes 560HE no yes

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SMA Solar Technology AG Mounting the Device

4.2.2 Mechanical coupling

ATTENTION!

Humidity through missing seal!

Be for e both switc h ca bin ets are con nec ted wit h each o the r, t he delivered seal must be stuck into the interface of the cabinets - if not already carried out ex-works.

The mechanical coupling of both switch cabinets is made through clamp joi nts . They c ons ist of t ermina l clamps and brackets with which the cabinets can be screwed together in several places. In order to do this, both cabinets have to be at the same level.

In the enclosed Rittal manual you will find information about how to mount the seals and the clamp joints.

4.2.3 Anchorage to the ground or wall

The Sunny Centrals are so heavy that an additional anchorage to the ground or the wall is not necessary.

Anchoring in a MV station Su nny Cen tra ls w hic h ar e ho use d an d tr ans por ted in a MV s tat ion are ancho red to t he w all

and to the ground of the station to avoid moving and damage during transport.

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Electrical Connection SMA Solar Technology AG

5 Electrical Connection

After both switch cabinets have been installed next to each other and have been mechanically connected, the individual cabinets must be electrically connected with each other. Afterwards, the external electrical connections are established.

Realization of the electrical connection For establishing the electrical connections and terminals, it is obligatory to follow the circuit

diagram included in the delivery. All internal connections have to be made in order to prepare the inverter for the external

AC and DC connections.

5.1 Internal Connections

For the internal electric connection of the two cabinets, the following internal connections have to be made:

• Power cabling between sine filter and transformer (not for the HE version)

• HE version: Power cabling between sine filter and power unit

• Sunny Central 250HE: Power cabling between sine filter and EMV filter

• Grounding connection between AC cabinet and DC / inverter cabinet

• Control line at the transfer terminal strip

• Communication between Sunny Central Control and power unit in DC / inverter cabinet

• Communication between Sunny Central and insulation monitoring

• Mounting of temperature sensor

• Power cabling Team concept (optional)

• Team communication RS485 (optional)

• Team control (optional)

• EVR resistor (optional)

Mounting the internal connections The internal connections are to a great extent pre-mounted and must finally be inserted or

screwed into the cabinets when putting together.

5.1.1 Power cabling between sine filter and transformer

At the sine filter choke in the DC / inverter cabinet, three power cables (U1, V1, W1) are connected; in the AC cabinet, they have to be connected to the appropriately marked terminal clamps (U1, V1, W1) of the transformer. The cables have already been equipped with cable lugs and cut in a way that the connection to the contact tip is clear. The sine filter is located in the Sunny Centrals of the types 100LV, 125LV, 150, 200 and 250 behind the fuses of the DC / inverter cabinet.

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SMA Solar Technology AG Electrical Connection

L+

L-

L+

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The transformer is located in these Sunny Central behind the front mounting plate of the AC cabinet. In the Sunny Central 350, the sine filter is located under the power units in the DC / inverter cabinet and the transformer is located in the lower area of the AC cabinet.

ATTENTION!

Operational reduction of the Sunny Central through faulty connection!

When connecting the power cables, be absolutely sure that the sensor cables are connected to the respective connection tips.

The following connection order has to be observed:

1. Connection tip transformer with inserted screws

2. Cable lug power cable

3. Cable lug measurement cable

4. Detent edged ring

5. Nut

Connection points U, V, W for power cable in the Sunny Central 350

H1-02

L-

L+

B BB

A Terminal lugs Sine filter choke (DC / inverter cabinet) B Terminal lugs Transformer (AC cabinet)

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Electrical Connection SMA Solar Technology AG

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Connection points U, V, W for power cable in the Sunny Central 150

A A A BBB

A Terminal lugs Sine filter choke (DC / inverter cabinet) B Terminal lugs Transformer (AC cabinet)

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SMA Solar Technology AG Electrical Connection

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5.1.2 HE version: Power cable connection

Sunny Central 200HE / Sunny Central 250HE / Sunny Central 350HE

At the inverter bridge in the DC / inverter cabinet, three power cables (U1, V1, W1) per power unit are connected; in the AC cabinet, they have to be connected to the corresponding marked terminal clamps (U1, V1, W1) of the sine filter choke. The cables have already been equipped with cable lugs and cut in a way that the connection to the contact tip is clear.

Connection Sine filter choke in the AC cabinet Sunny Central 350HE

H1-02

L-

L+

A B BB

A Terminal lugs Power unit B Terminal lugs Sine filter

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Electrical Connection SMA Solar Technology AG

Sunny Central 500HE / Sunny Central 560HE

The power cable connection of the power units in the inverter cabinet to the sine filter choke in the AC cabinet is to be carried out using the delivered Radox cables (W131 to W139).

The delivered Radox cables have different lengths for the left-hand and right-hand systems. With the help of the circuit diagram for the appropriate Sunny Central, attach the cables.

According to the provided circuit diagram, one power unit per phase is connected to the sine filter choke with 3 x 1 x 185 mm². The appropriate connection screws are to be found at the connection points.

ATTENTION!

Operational reduction of the Sunny Central through faulty connection!

When connecting the power cables, the following connection order has to be observed (viewed from the front):

1. Screw

2. Washer

3. Cable lug

4. Connection point sine filter or power unit

5. Cable lug

6. Washer

7. Detent edged ring

8. Nut

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SMA Solar Technology AG Electrical Connection

L-

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M3-810

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Procedure for power cabling:

1. The lower power unit has to be connected first, then the middle one and finally the top one.

2. The power cables with the delivered cable clamps have to be clamped into the corresponding cable clamp rail.

3. Feed the cables through the opened side wall above the cabinet bottom plates, reinsert them in the area of the AC cabinet and connect to the sine filter choke.

The following figure shows the terminal lugs at the three power units in the DC / inverter cabinet and the connection of the power cables to the sine filter in the AC cabinet of the Sunny Central 500HE / Sunny Central 560HE.

H1-02 H1-02

L+

L-

L+L-L+

L-

A Terminal lugs Sine filter choke B Terminal lugs Power unit

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Electrical Connection SMA Solar Technology AG

L-

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L+

L-

L+

L-

L+

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M3-810

L+

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5.1.3 PE connection between AC cabinet and DC / inverter cabinet

The PE rails for the individual switch cabinets are located at the bottom of the side areas. The two PE rails with the prefabricated PE bridge which is already connected in a switch cabinet must be connected together when putting together both inverters.

Example PE connection between the switch cabinets of the Sunny Central 500HE

H1-02 H1-02

L+

M3-810

L-

L+L-L+

L-

Checking the grounding connection When connecting the grounding connection, make sure that the screws are securely

positioned.

Position of the PE rail Depending on the construction, the exact position of the PE rail in some switch cabinets is

located behind the fuse strip in the DC cabinet or behind the transformer in the AC cabinet. With the help of the equipment identifier and the provided circuit diagram, the exact position of the PE rail can be determined.

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SMA Solar Technology AG Electrical Connection

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M3-810

L+

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5.1.4 Control lines at the transfer terminal strip

Checking of the cabling When connecting the control lines, the correct sequence and the appropriate colors of the

wires have to be observed. The plugs are numbered consecutively.

Most control lines, which have to be connected between the swit ch cabinets, are simply connected to the transfer terminal strips via plugs. The transfer terminal strips are located in the AC cabinet on the mounting plate facing the DC / inverter cabinet. The cable bundles to be connected are marked with target descriptions.

Example transfer terminal strip between the switch cabinets of the Sunny Central 500HE

H1-02 H1-02

L+

M3-810

L-

L+L-L+

L-

Position of the transfer terminal strips With the help of the equipment identifier and the provided circuit diagram, the exact

position of the transfer terminal strips can be determined.

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Electrical Connection SMA Solar Technology AG

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M3-810

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5.1.5 Connecting Sunny Central Control to power unit

Attention!

Damage to the cabling through faulty installation

• The cabl es mus t neither be laid in th e cabl e channel, nor parallel to the power cables (EMV).

• In the switch cabinet, the cables have to be laid freely.

• Connect he plug-in contact carefully to the board.

Connect the data line of the Sunny Central Control to the system control board at the power unit. For this, the cable has a 4-pole white plug-in contact which has to be plugged into the system control board. In most switch cabinets, the system control board and the control board (ADAPBFS) are positioned below the power units, hanging upside down. In the switch cabinets of the Sunny Centrals 500HE and 560HE, they are located on the top power unit.

The system control board communicates with the control board via a ribbon cable. The slot for the plug of the data line is located on the right side of the board directly at the communication interface (Piggy-Back).

Connection terminal for data line Sunny Central 500HE / Sunny Central 560HE

H1-02 H1-02

L+

L-

L+L-L+

L-

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Connection terminal for data line Sunny Central 350HE

H1-02

L-

L+

Position of connection terminal of data line With the help of the equipment identifier and the provided circuit diagram, the exact

position of the connection terminal can be determined.

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Electrical Connection SMA Solar Technology AG

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M3-810

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5.1.6 Internal control lines of the power unit

The X8 and X9 control lines coming from the AC cabinet are connected to the control board at the power unit. The control board is also located hanging upside down at the power unit. In the switch cabinets of the Sunny Centrals 500HE and 560HE, they are located on the top power unit. Both 2-pole green X8 and X9 plug-in contacts have to be fixed to the correspondingly marked sockets.

Connection of the internal control line with Sunny Central 500HE

H1-02 H1-02

L+

M3-810

Connection of the internal control line with Sunny Central 350HE

H1-02

L-

L+

L-

L+L-L+

L-

Position of the connection terminals in the control line With the help of the equipment identifier and the provided circuit diagram, the exact

position of the connection terminals can be determined.

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SMA Solar Technology AG Electrical Connection

5.1.7 Communication for insulation monitoring

Attention!

Damage to the cabling through faulty installation.

• Lay the connection cables in the cable channel.

The insulation monitoring is located in the DC cabinet. A 2-wire data line connects the Sunny Central Control with the insulation monitoring and has to be connected as follows:

• Connection: M (+) clamp insulation monitoring: brown wire

• Connection: M (-) clamp insulation monitoring: white wire

Insulation monitoring with connected data line (A) with Sunny Central 500HE and Sunny Central 560HE

Position of the connection terminal of the insulation monitoring With the help of the equipment identifier and the provided circuit diagram, the exact

position of the insulation monitoring can be determined.

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Electrical Connection SMA Solar Technology AG

L+

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5.1.8 Installing internal temperature sensor

The measurement of the inside temperature of the switch cabinet is carried out by a temperature sensor. In the switch cabinets of the Sunny Central 350, Sunny Central 350HE, Sunny Central 500HE and Sunny Central 560HE, the temperature sensor is pre-mounted. In all other switch cabinets, the temperature sensor is located in the DC cabinet upon delivery of the inverters and has to be moved to and fixed into the AC cabinet when assembling the two switch cabinets.

The temperature sensor has to be fixed in the middle of the inverter. Appropriate retaining screws and a cable clamp are pre-mounted at the marked installation site.

Fixing the sensor:

1. Open the housing of the temperature sensor.

2. The lower part has to be screwed slightly onto the inside construction.

3. Close the cover of the temperature sensor.

Mo unt ing the tem per atu re s ens or i n th e DC cabi net of t he S unn y Central 150. The temperature sensor has to be fixed to the right side panel in the DC cabinet.

L1 L2 L3

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M3-810

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Position of the temperature sensor in the AC cabinet of the Sunny Central 500HE and Sunny Central 560HE

H1-02 H1-02

L+

M3-810

L-

L+L-L+

L-

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Electrical Connection SMA Solar Technology AG

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5.1.9 Team cabling (optional)

Optionally, two Sunny Centrals can be interconnected in one concrete station or in another electrical operating room and together feed their power into the grid by means of a medium-voltage transformer.

When using the team concept, the internal DC power connection of the team configuration has to be connected between the two cabinet components.

With the inverters Sunny Central 350HE, Sunny Central 500HE and Sunny Central 560HE this is already installed ex-works. The terminals of the team chief and the team member are different.

Team cabling of the team chief

With the team chief, two DC cables coming from the DC bus bar of the DC cabinet have to be connected to the input of the team clamps in the AC cabinet.

Team clamp for team cabling with team chief with Sunny Central 250HE

A Connection points for internal team cabling B Connection points for external team cabling

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SMA Solar Technology AG Electrical Connection

L+

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Team cabling of the team member

ATTENTION!

Damage to the Sunny Central through incorrect cabling

• When connecting the team cables at the team contactor, the labeling of the cables has to be observed.

• Check polarity of DC cables.

With the team member, the two DC cables for the internal team cabling coming from the DC bus bar of the DC cabinet are to be led to the connection points (Shunt and NH fuses) at the team contactor. The team contactor is located in the AC cabinet at the front mounting plate.

Checking of the cabling When connecting the power cables, make sure that the screws are securely positioned.

Team contactor for team cabling with team member for Sunny Central 250HE

A Connection points for internal team cabling B Connection points for external team cabling

External team connection The external team cabling is described in chapter 5.2.8?„Team Power Cabling“ (64).

Position of the connection terminals of the team contacts

Installation Guide SC125_560HE-IEN083220 45

With the help of the equipment identifier and the provided circuit diagram, the exact position of the internal and external team contacts can be determined.

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Electrical Connection SMA Solar Technology AG

5.1.10 EVR Cabling (optional)

With the Sunny Centrals 350 and 500, the EVR resistor has to be mounted on top of the Sunny Central. Proceed as follows:

1. The EVR resistor between the rails has to be pushed onto the roof of the Sunny Central.

2. 9 screws at the protective bar of the EVR resistor have to be removed.

3. Protective bar has to be taken off to the front.

4. Connect the grounding cables in EVR resistor to the left side of the bolt (torque 21 Nm).

5. Fix the EVR resistor with both screws on the left and right side of the EVR resistor onto the rails.

6. Connect the power cables using the provided circuit diagram (torque 21 Nm).

7. Fix the protective bar with 9 screws onto the EVR resistor (torque 2.6 Nm). ☑ The EVR resistor is installed.

5.1.11 Sunny Central for installation near the sea (optional)

Optional package for Sunny Centrals in the case of installation near the sea. With this optional package, the Sunny Centrals are protected against salt mist and comply to the requirements of DIN EN 60721-3-3, class 3C2 "Environmental Conditions for Fixed Use,. Weather-protected". You can find further information in the separate documentation.

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5.2 External Connections

ATTENTION!

Yield loss due to poor electrical conductivity!

The connection points for the external terminals are either copper or aluminum. If copper and aluminum are connected with each other at the connection point, the electrical conductivity decreases.

• Check which material is used at the connection point.

• When combining both materials, use either a copper-aluminum washer or copperaluminum cable lugs.

For external electrical connection of the Sunny Centrals, the following connections have to be made:

• AC grid connection

• Connection PE rail with HE version

• AC control voltage

•DC connection

• Power cabling Team concept (optional)

• External messages and signals

• Sensors and digital outputs

• Communications connection

• Emergency-stop cabling

• Lightning / Surge protection

Making the external connections Make the external connections with the help of the provided circuit diagram.

Dimensioning the connections How to carry out the AC grid-connection point as well as the maximum inverter-specific

connection cross-section and cable lugs are included in the installation requirements of the relevant Sunny Central.

5.2.1 AC grid-connection standard devices

WARNING!

Risk of death due to burns and electric shock when live parts of the low-voltage grid are touched!

• Do not touch the live components of the Sunny Central or low-voltage grid.

• All safety precaution measures regarding the low voltage grid must be observed.

• Only work on this device when it is switched off and under voltage-free conditions.

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The AC grid connection of the Sunny Central (except Sunny Central type HE) is 3-phased.

The Sunny Centrals are configured for the connection to a TN-C grid as standard. Connection to TN-S or TT grid: Remove bridge between N and PE at the grid connection

(see circuit diagram). Connection to IT grid: An IT grid can be project-specifically realized. Contact the Sunny

Central Service Line

The connection terminals are to be located in the AC switch cabinet in the lower area of the front mounting plate. The cable must be routed into the inverter from below, the connection of the AC cables are made using cable lugs.

En sur e th e gr id c onn ect ion cab le i s fu sed at t he n omi nal cur rent i ndi cat ed o n th e ty pe p lat e. If the specified nominal current differs from the nominal current of the fuse plug, the fuse plug having the next highest nominal current may be used.

The cables are fed through the socket and the base of the cabinet.

1. Open the base plates (slideable plate) in the front of the cabinet and pull the cable into the inside of the cabinet.

2. For strain relief of the cables, fix the cable clamp rail with cable clips. The cable clips are included in the delivery.

The connection terminals of the Sunny Central 350 are located in the upper area of the side panel of the AC switch cabinet. The cable must be routed through cable bolting in the roof of the AC switch cabinet, the AC cables are connected using cable lugs.

ATTENTION!

Damage to the Sunny Central due to faulty bolted connection at the AC connection.

• For strain relief of the AC connection, only use aluminum cable clips.

• Screw the AC cables at the connection point with the appropriate torque (see appendix).

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L+

L-

L+

L-

L+

L-

L+

L-

L+

L-

View of the AC connection of the Sunny Central 250

View of the AC connection of the Sunny Central 350

L2L1

Achtung!

Bei ausgeschaltetem

Bei ausgeschaltetem Hauptschalter

Hauptschalter unter Spannung

unter Spannung

Sealing the cable ports To seal the slideable plates and the installed cables, install the seals included in the

delivery.

Installation Guide SC125_560HE-IEN083220 49

Correct installation of the rotary field The grid connection must be installed in such a way that a right-hand rotary field lies at the

input of the cabinet. In case of incorrect connection, the Sunny Central issues a fault message.

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Electrical Connection SMA Solar Technology AG

Position of the AC connection terminals Due to construction, the AC connection can vary. With the help of the equipment identifier

and the provided circuit diagram, the exact position of the AC connection terminals can be determined.

5.2.2 AC grid connection of HE versions

WARNING!

Risk of death due to burns and electric shock when live parts are touched!

• Do not touch the live components of the Sunny Central or the public grid.

• All safety precaution measures regarding the public grid must be observed.

• Only work on this device when it is switched off and under voltage-free conditions.

The Sunny Central HE series is designed for grid connection through a medium-voltage transformer. The medium-voltage transformer is realized depending on the project. The form of grid connection of the inverter is IT grid. That means: the grid between the inverters and the medium-voltage transformer is not grounded. The connection is 3-phased with the following operating voltage:

V: nominal voltage between the external conductor: depending on the device type 270 V (315 V with Sunny Central 560)

Vo: Nominal voltage between external conductor and ground: 1000 V (depending on the current operation of the device)

ATTENTION!

High voltages in the IT grid.

Due to the IT grid, during inverter operation there are nominal voltages of up to 1000 V between the external conductor and ground.

• When choosing the AC cables, take into account the increased demands on the nominal voltage Vo against grounding.

The connection of one fuse load break switch in the AC cabinet of the inverter to the low voltage winding of a medium-voltage transformers is 3-phase.

ATTENTION!

Damage to the Sunny Central through faulty AC connection.

Dimensioning of the AC cables which have to be connected

• Lay the AC cables with a voltage resistance of minimum 1000 V.

• Lay the AC cables ground- and short-circuit proof.

• Only use aluminum cable clips (included in the delivery) for the cable clips of the AC connection.

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SMA Solar Technology AG Electrical Connection

L+

L-

L+

L-

L+

L-

L+

L-

L+

L-

L+

L-

AC gri d co nne cti on f or I T gr id a t th e fu se s wit ch d isconn ect or in the AC cabinet Sunny Central 250HE, the cable must be routed into the inverter from below.

AC grid connection for IT grid to copper bus bar via fuse switch disconnector in the AC cabinet of the Sunny Central 350HE. Cables must be routed into the inverter from the top.

Achtung!

Bei ausgeschaltetem Hauptschalter unter Spannung

AC grid connection for IT grid to EriFlex bus bars outside the AC cabinet of the Sunny Central 500HE and 560HE

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Electrical Connection SMA Solar Technology AG

ATTENTION!

Operational reduction of the Sunny Central through faulty connection!

When connecting the power cables, the following connection order has to be observed (viewed from the front):

1. Screw

2. Washer

3. Cable lug

4. Connection EriFlex

5. Cable lug

6. Washer

7. Detent edged ring

8. Nut

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SMA Solar Technology AG Electrical Connection

1. EriFlex bus bars (included in the delivery) have to be inserted into the AC cabinet from the top.

2. Connect the EriFlex bus bars to the fuse switch disconnector in the AC cabinet.

3. Connect the AC cables from outside to the EriFlex bus bars.

AAA

A EriFlex bus bars in the Sunny Central B Openings in the switch cabinet roof for the EriFlex bus bars

AC connection Sunny Central 500HE / Sunny Central 560HE The AC connection of the Sunny Central of the types 500HE and 560HE must be made

using the EriFlex bus bars that are included in the delivery.

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Electrical Connection SMA Solar Technology AG

5.2.3 AC grid connection with MV stations

WARNING!

Risk of death due to burns and electric shock when live parts of the public grid are touched!

• Do not touch the live components of the Sunny Central or the public grid.

• All safety precaution measures regarding the public grid must be observed.

• Only work on this device when it is switched off and under voltage-free conditions.

The connection concept for two Sunny Central HE inverters is factory provided in the Sunny Central MV sta tio n. I n th e Su nny Centra l MV sta tio n, t he A C co nne cti on is 3-phase to the high-voltage winding of a three winding power converter medium voltage transformer. The connection is made with male taper plug-in contacts not included in the delivery.

Grounding and short-circuiting of the MS transformer high-voltage side

• Grounding and short-circuiting of the MS transformer high-voltage side is made in the customer side upstream MS switching station.

• Grounding and short-circuiting of the MS transformer under-voltage side is made in the Sunny Central HE inverter on the AC fuse switch disconnector. The corresponding grounding and shortcircuiting set can be ordered at SMA.

• This is connected to the grounding cable, then put into the fuse switch disconnector and closed.

• The grounding cable is located in the marked cable channel of the AC cabinet.

Optional grounding and short-circuiting set The grounding and short-circuiting set can be ordered at SMA.

WARNING!

Risk of death due to burns and electric shock when live parts of the medium voltage are touched!

For service and maintenance work on the Sunny Central, disconnect the medium voltage transformer from the grid.

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SMA Solar Technology AG Electrical Connection

L-

L+

L-

L+

L-

L+

L-

L+

L-

M3-810

L+

L-

L+

L-

5.2.4 Connection PE rail with HE version

WARNING!

Risk of death due to burns and electric shock when live parts are touched!

• Do not touch the live components of the Sunny Central, the public grid or the lowvoltage grid.

• All applicable safety regulations must be observed.

• Only work on this device when it is switched off and under voltage-free conditions.

In the Sunny Central 200HE, Sunny Central 250HE and Sunny Central 350HE, the PE rail in the AC cabinet has to be connected to the equipotential bonding of the installation site or the electrical operating room. In the Sunny Central 500HE and Sunny Central 560HE, connect both PE rails in the DC cabinet and in the inverter cabinet separately to the equipotential bonding or grounding.

Terminal for equipotential bonding in Sunny Central 500HE

H1-02 H1-02

L+

M3-810

L-

L+L-L+

L-

Cable dimensioning of the PE connection The PE connection for the equipotential bonding has to be carried out with at least

1 x 50 mm².

Position of the PE rail Depending on the construction, the exact position of the PE rail in some switch cabinets is

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Electrical Connection SMA Solar Technology AG

L+

L-

L+

L-

5.2.5 AC control voltage

WARNING!

Risk of death due to burns and electric shock when live parts are touched!

• Only work on this device when it is switched off and under voltage-free conditions.

The energy required for driving the Sunny Central is provided by an external control voltage supply source. As standard, The form of grid connection of the control voltage supply source is TN-S grid. The connection in the Sunny Central inverters of the type 100LV, 125LV, 150, 200 and 200HE is single-phase. For all other Sunny Centrals it is three phase. The connection is made via a separate cable.

Realization of the external control voltage When connecting the external control voltage, it is obligatory to follow the circuit diagram

included in the delivery.

As an option, the power required for driving the internal circuits of the Sunny Central 230 / 400 V (except HE version) can be taken internally from the grid-feed-in line of the inverter. This reduces the feed-in energy yields by the amount of power required by the inverter itself (fans, heating etc.). To realize this, the connection terminals of the AC control voltage have to be bridged according to the circuit diagram.

Connection terminal for control voltage in the Sunny Central 150

L1 L2 L3

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SMA Solar Technology AG Electrical Connection

L+

L-

L+

L-

L+

L-

L+

L-

L+

L-

Connection terminal for control voltage in the Sunny Central 250

Connection terminal for control voltage in the Sunny Central 350

L2L1

Achtung!

Bei ausgeschaltetem

Bei ausgeschaltetem Hauptschalter

Hauptschalter unter Spannung

unter Spannung

A Connection terminal for control voltage (Standard)

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Electrical Connection SMA Solar Technology AG

ATTENTION!

Realization of the external control voltage with Sunny Central 500HE and Sunny Central 560HE

As described in the circuit diagram, connect the cable of the external control voltage in the Sunny Central 500HE and Sunny Central 560HE directly to the EMV filter.

Connection terminal for control voltage (A) Sunny Central 500

Internal surge protectors One internal surge protector is provided for the internal control voltage of the HE version.

Dimensioning of the auxiliary supply voltage The auxiliary supply voltage required for the relevant Sunny Central is described in the

installation requirements, can be ordered at SMA at any time and has to be observed for project planning and for preparing the installation site.

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5.2.6 Handling the Connection Terminals Control voltage

WARNING!

Risk of lethal electric shock!

High voltages are present in the device.

• Disconnect the Sunny Central.

• The connections should only be made under voltage-free conditions.

The following figure shows the correct method for handling the terminals used for connecting external cables to the control terminal strip of the control voltage. The connection terminals are designed as maintenance-free spring-loaded terminals that can be operated using a screwdriver of suitable size.

Handling the connection terminals (source: Wago)

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Electrical Connection SMA Solar Technology AG

5.2.7 DC connection

In the DC / inverter cabinet of the Sunny Central, there are NH fuses (except in the Sunny Central 500HE and Sunny Central 560HE) which allow string distribution boxes to be connected.

Number of the fused inputs in the Sunny Central The number of fused DC inputs depends on the device type and is listed in the installation

requirements.

ATTENTION!

Damage to the Sunny Central or PV generator through incorrect cabling.

When connecting the DC cables, it is obligatory to follow the circuit diagram provided.

ATTENTION!

Operational reduction through too low voltage capability!

Ensure that the DC cables are appropriately voltage-proof!

ATTENTION!

Operational reduction through poor sealing!

All cable insertions must be closed hermetically against the environment. This prevents the cooling air to be drawn past the air inlet filters.

The cables are fed through the socket and the base of the cabinet:

1. Open the base plates in the front of the cabinet and pull the cable into the inside of the cabinet.

2. For strain relief of the cables, fix the cable clamp rail with cable clips. The cable clips are included in the delivery.

3. The connection of the DC cables have to be made with cable lugs directly at the NH fuse holders.

Dimensioning of the connection point The layout of the connection point is described in the installation requirements.

The NH fuse holders are located in the lower area of the DC cabinet. Appropriate ring cable lugs have to be pressed onto the ends of the power cables.

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After all cables have been connected, the slideable plate with the adhesive seal tape can be re-inserted. The seal tape is included in the delivery and is to be stuck onto the f ront s ide of the slideable plates to seal the ga p

Achtung!

Bei ausgeschaltetem Hauptschalter unter Spannung

between the cables. View of the slideable plates sheets in the DC cabinet

Sunny Central 150

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Electrical Connection SMA Solar Technology AG

L+

L-

L+

L-

L+

L-

L+

L-

L+

L-

L+

L-

DC cabling Sunny Central 350 / Sunny Central 350HE

The DC input fuses in the inverter are usually arranged in one row. The DC fuses in the switch cabinets of the type Su nny Cen tra l 35 0 / S unn y Ce ntra l 35 0HE are att ach ed one behind the other and at different heights on two mounting plates. The special connection version of the DC fuses in the Sunny Central 350 / Sunny Central 350HE can be seen in the figure on the right.

ATTENTION!

Possible damage to the cabling!

The rear cable clamp rail is installed behind the DC fuse unit located in the front.

Installation of the DC cabling:

1. For the installation of the DC cabling, the rear DC fuses must be installed first. Firstly, the front mounting plate with the DC protection unit on top must be completely dismantled. Now you can also see the concealed cable clamp rail (A).

Right figure: View of the rear DC fuses on the mounting plate

2. Installation of DC cabling.

3. Install front mounting plate.

4. Install the remaining DC cabling.

The inputs fused on the positive and negative sides are de sig ned as N H fu ses (ex cept Su nny Cen tra l 500HE and Sunny Central 560HE) and are connected on the DC rails L+ and L-.

H1-02

L-

L+

H1-02

L-

L+

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L+

L-

L+

L-

L+

L-

L+

L-

DC cabling Sunny Central 500HE / Sunny Central 560HE

In the Sunny Central inverter cabinets of the type 500HE and 560HE no DC input fuses are included. They are located outside the inverter in DC fuse collectors (Sunny Main Box), which are dimensioned dependent on the project. In the Sunny Main Box, the DC lines of the Sunny String boxes and the DC fuses are connected.

The DC main cables coming from the Sunny Main Box are connected to DC bus bars (A) in the Sunny Central.

H1-02 H1-02

L+

L-

L+L-L+

L-

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Electrical Connection SMA Solar Technology AG

5.2.8 Team Power Cabling

The required cables (Standard: 5m) for connecting the team cabling are included in the delivery.

In chapter 5.1.9 „Team cabling (optional)“ (44), the internal power cabling in the inverter is described for the team concept. To co nnect the inverters which are part of the team, the external team power cabling of the inverter has now to be carried out one under the other.

Realization of team cabling When connecting the team configuration, it is obligatory to follow the circuit diagram

included in the delivery.

ATTENTION!

Possible damage to the cabling!

The power cables of the team connection of the inverters must have a DC voltage resistance of a minimum of 1000 V DC and must be dimensioned for the maximum expected DC team current (at 100% nominal power).

The following table contains the corresponding information about DC team current.

Sunny Central max. DC current [A]

input

max. team current

[A]

connection terminal

WFF [mm²]

Sunny Central 100LV 430 224 185

Sunny Central 125LV 448 224 185

Sunny Central 150 354 177 185

Sunny Central 200 472 236 185

Sunny Central 250 591 296 185

Sunny Central 350 800

400 300

Sunny Central 500 2 x 591 (1182) 2 x 296 2 x 300

Sunny Central 560 2 x 591 (1182)

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SMA Solar Technology AG Electrical Connection

5.2.9 External messages and signals

Alongside the external team power cabling, appropriate signal and message connections between the team devices have to established.

Setting up the signal and message connections between both team devices. When connecting the signal and message connections between both team devices, it is

obligatory to follow the circuit diagram included in the delivery.

Overtemperature notification from the medium voltage transformer Specific to the HE devices, it is possible to connect an overtemperature notification from the

medium voltage transformer.

Remote deactivation unit Special project-dependent installations can optionally be equipped with a remote

deactivation unit in combination with the monitoring of the switching position. When connecting the remote deactivation unit, it is obligatory to follow the circuit diagram

included in the delivery.

5.2.10 Sensors and digital outputs

In the Sunny Central it is possible to connect a temperature sensor PT 100 and two further analog sensors (e.g. pyranometer, reference cell) to the Sunny Central Control panel. The corresponding connection customer-side possibilities are at the analog inputs Ain 3, Ain 4 and Ain 8. Further information about the connection and parameterization of analog sensors is contained in the Sunny Central user manual.

Assignment of analog and digital signals with Sunny Central Control When connecting the analog sensors and for the digital signals, it is obligatory to follow

the provided circuit diagram. The connection is made at the connection terminals. The connection for the four-conductor and two-conductor sensor has to be considered and if necessary essential measuring transformers have to be installed.

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Electrical Connection SMA Solar Technology AG

L+

L-

L+

L-

L+

L-

L+

L-

L+

L-

L+

5.2.11 Shield Contact Handling Instructions

The external signal and bus cables must be shielded. The shield must contact the shield rail provided for this purpose, over a large surface area. The contact is made with the shield clamps included in the delivery.

ATTENTION!

Damage of the shield clamps through incorrect handling

Th e sh iel d cl amps mu st o nly be t igh ten ed by ha nd a nd n ot t hro ugh the use a of screwdriver. Tightening the clamps with the use of a screwdriver can damage the cable insulation.

The correct handling of the shield clamps is shown in the figure on the right.

Shield rail (A) in the area of the external connection terminals in the Sunny Central 250

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Sh iel d ra il ( A) in th e ar ea o f ex ter nal con nec tio n te rmi nal s in the Sunny Central 350 AC cabinet on the left side panel

Shield rail (A) in the area of the exte rnal connection terminals in the Sunny Central 500HE and Sunny Central 560HE

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Electrical Connection SMA Solar Technology AG

L+

L-

L+

L-

5.2.12 Serial Interfaces

NET Interface

For communication with the Sunny Central Control for data transmission to a PC, modem or Sunny WebBox, the NET interface has to be used.

Position of the NET interface The exact position of the NET interface varies according to the Sunny Central. With the

help of the equipment identifier and the provided circuit diagram, the exact position of the NET interface can be determined.

RS485 Data cable

The communication between the Sunny Central Control and the Sunny String Monitors (integrated string current monitoring) is conducted via a RS485 data line, on th e CO M1 p ort of t he S unn y Ce ntr al Control. The RS485 data line of the string current monitoring of the Sunny String Monitor is connected to the HUB components in the Sunny Central.

Position of the HUB The exact position of the HUB varies according to the Sunny Central. With the help of the

equipment identifier and the provided circuit diagram, the exact position of the HUB can be determined.

Connection of the RS485 data line in the Sunny Control 150

L1 L2 L3

A RS485 HUB and NET interface

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Connection of the RS485 data line in the Sunny Central 350 (Standard) In the Sunny Central 350 (Standard), the HUB is located at an inconvenient position. For this reason,

the terminals of the HUB are diverted to clamps (see figure below).

Achtung!

Bei ausgeschaltetem

Bei ausgeschaltetem Hauptschalter

Hauptschalter unter Spannung

unter Spannung

L2L1

Connection: RS485 bus for the string current monitoring

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Electrical Connection SMA Solar Technology AG

Connection of the RS485 data line in the Sunny Central 500HE / Sunny Central 560HE

Connection: RS485 bus for the string current monitoring

Position of the HUB components The exact position of the HUB components varies according to the Sunny Central. With the

help of the equipment identifier and the provided circuit diagram, the exact position of the HUB as well as of the NET interface can be determined.

Connection of the data line with team function

In PV systems with inverters in team configuration, the communication between both Sunny Central Controls takes place in addition via the COM1 port.

If using a Team configuration, termination is made in the Sunny Central Control. In Team systems, the Sunny Central Controls are preterminated at the factory.

Termination in the Sunny Central Control If using a Team configuration, remove the jumper at the hub (RS485 OUT) and replace it

with the CAT5 cable provided. Termination then takes place in the Sunny Central Control.

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View of a team configuration of the RS485 data line Connect the hubs of both Sunny Centrals in the Team with the CAT5 cable provided.

Sunny

Central

Stri

U 1

- A

Powe

+ 5

5 V

p p

S M

o we

t / H

C C

F U

4 8 5 I N

L L

S 4 8 5

O U

T N C

AC P E P E

D a t a

- D a t a +

u n n

N D G

e n

r a l

M V + 5 5 V

S M A . d e

S C

o n t r o l

E N T E R

Sunny

Central

Strin

- A

Powe

+ 5

5 V

p l

S M

Pow

t / H

C C

F U

4 8 5 I N

L L

S 4 8 5

O U T

C P E P E

D a t a

- D a t a + G

u n

G N D

C e n t r

M V + 5 5 V

. S M A .

d e

S C

o n

t r o

N T E R

Technical description of the Sunny String Monitor The provided documentation of the Sunny String Monitors contains a detailed description

of the installation of the integrated string current monitoring.

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Electrical Connection SMA Solar Technology AG

5.2.13 Emergency-stop cabling

The Sunny Central is equipped ex-works with an internal emergency-stop switch. If an external emergency-stop is desired, it can be connected to terminal 2 and 3 of the terminal strips Z3-X3.

Connection of the external emergency-stop cabling When connecting the external emergency-stop cabling, it is obligatory to follow the circuit

diagram included in the delivery. The connection is made at the connection terminals. For this, the bridge between terminal 2 and 3 has to be removed.

Emergency-stop chain

In the case that several Sunny Centrals are in operation in one installation, all of them have to be switched off when the emergency-stop switch is activated by one inverter (creation of an emergencystop chain). For this all Sunny Central emergency-stop switches are connected in series.

ATTENTION!

Damage to the Sunny Central through missing emergency-stop function.

In installations with more than one inverter, the emergency shut-off circuits of the existing devices have to be connected with each other and be tested for correct functionality.

The emergency-stop chain may only be supplied with voltage from a single Sunny Central.

5.2.14 Surge protection

Position of the surge protectors The exact position of the surge protectors varies according to the Sunny Central. With the

help of the equipment identifier and the provided circuit diagram, the exact position of the surge protector can be determined.

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6 Commissioning

An y wa rranty or g uar ant ee c laims a re o nly val id when the com mis sioning gas been carried out by SMA or when the "Commissioning report for Sunny Central systems" provided by SMA is complete, signed and accessible to SMA.

Before commissioning, all work performed on the device should be thoroughly checked. In particular, the voltages on the DC and AC sides should be checked for conformance to the limits allowed on the inverter and polarity.

6.1 Requirements for commissioning

Before commissioning, the following requirements have to be filled for correct commissioning of the Sunny Central in accordance with the regulations.

The PV generator must be constructed and tested in accordance with VDE 0100 part 610 BGV A2 "Electrical Systems and Appliances". The grounding resistance is decisive for the safety of the complete system and must therefore be determined before initial commissioning.

Circuit breaker and motor overload switch In the delivered state, all circuit beakers and motor overload switches in the Sunny Central

are switched off.

6.2 Cabling Checks

When performing the cabling checks, the connections made between the switch cabinet units are first checked for correctness and proper installation.

In particular the following points must be checked:

• Correct order and tight mounting of the plugs of the transfer terminal strip

• Tight fixation and correct phase series of the transformer or sine filter connections

• Correct connection of the data and control lines at the power unit

• Correct connection of the data line for insulation monitoring

• Mounting location of the internal temperature sensor

• Internal power cabling for the team concept

• Are the PE rails of the cabinet components connected with each other?

6.2.1 Cabling Check AC Grid Connection

• The connection made to the feed-in cables is 3-phase.

• A right-hand rotary field must lie at L1, L2, L3.

• Measuring and recording the amount of the AC voltage.

• Make sure that the terminals are securely positioned.

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Commissioning SMA Solar Technology AG

Equipotential bonding

The Sunny Central HE inverter is connected to the equipotential bonding of the mounting locations respectively of the operation room. Make sure that the terminals are securely positioned.

AC auxiliary power supply connection

Check the connection of the separate cable for the external AC auxiliary supply voltage.

• If the power required is supplied externally and in three phases, a right-hand rotary field has to lay here as well.

6.2.2 Cabling Check DC Power Connections

The DC power connections are made via the main DC cables to the inverter.

• The voltage on the individual DC main cables should be identical and must never exceed the maximum DC voltage of the inverter.

• Make sure that the terminals are securely positioned.

ATTENTION!

Damage of the central inverter through too high DC voltage

The DC voltage of the PV generator must never exceed the maximum permissible inverter input voltage.

• VPV ≤ 1000 V for Sunny Central Standard / HE with EVR option

• VPV ≤ 880 V for Sunny Central Standard / HE

• VPV ≤ 650 V for Sunny Central LV

Check the polarity of the individual DC main cables. Incorrect polarity in one of the DC main cables can also damage the PV generator.

Cabling checks Team-connection

• In the case that two Sunny Central inverters work in the team, check also the team terminals in the devices for polarity and secure position.

• The cables a re con nected via the DC main cab les be tween the team clamp in the Sun ny Cen tral team chief and the team contactor clamp in the Sunny Central team member.

6.2.3 Cabling Check Serial Interfaces

Checking of the external communication and the string current monitoring

• Check the cabling of the connection of the data lines at the Sunny String Monitor HUB.

• Check the connection of the NET interface.

6.2.4 Emergency-stop cabling

Check the external emergency-stop switch and the emergency-stop chain.

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6.2.5 Settings for thermostats and hygrostat

In the device, there are adjustable thermostats for the activation of the switch cabinet fans and the overtemperature disconnection. The heating is activated via an adjustable hygrostat. All thermostats and the hygrostat are pre-adjusted before delivery.

Check the setting of the thermostats and the hygrostats Compare the settings with the information in the circuit diagram. In case of any deviation,

set the values as shown in the circuit diagram.

6.3 Switch On

If all tests and measurements have been performed, and all measured values lie within the acceptable range, then the device can be switched on for the first time.

1. Press the DC fuses with the provided fuse carrier into the fuse holder (for Sunny Central 500HE and 560HE these are to be found in the external Sunny Main Box).

2. Switch on all circuit breakers and motor overload switches in the Sunny Central inverter. The inverter is now completely connected on the AC and DC sides and can be switched on using the key switch.

3. Close all cabinet doors and turn the key switch to the right to the “Start” position.

4. The Sunny Central will now start automatically. First, the grid voltage and frequency parameters are checked. After approx. 20 seconds, the motorized DC breaker is activated automatically and connects the PV generator.

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Appendix A: Transport instructions SMA Solar Technology AG

7 Appendix A: Transport instructions

Instructions for Transporting Sunny Central 100 LV to 560 HE inverters

WARNING!

Heavy weight of switch cabinet units!

Danger of tipping during transport!

• The cabinet units must always be transported in an upright position.

• The center of gravity of the Sunny Central is indicated on the outside of the packaging.

To avoid cases of damage, observe the following information on how to transport a Sunny Central:

• The Sunny Central must not be re-loaded during transport. SMA Solar Technology AG has agreed on a general re-load prohibition with all its freight forwarders.

• All Sunny Centrals are labeled on the front and rear sides with the international center of gravity symbol.

• Observe all information concerning the transport of the Sunny Central. These stipulate that the Sunny Centrals may only be transported by means of a forklift or pallet truck with the broadside (front or back side) of the Sunny Central facing the lifting gear. Lifting the device at the sides (left or right) is forbidden.

• For the transport by crane, use an appropriate crane fork which is suitable for the weight of the Sunny Central. The crane fork is run through the openings at the base.

• Transporting the device at the top by using eyelets is only permitted under certain conditions. Read chapter „Overview of transport possibilities of the individual cabinets.“ (79) to know which Sunny Central may be transported using eyelets.

An appropriate crane rack has to be mounted which guarantees a symmetrical loading of all four eyelets and ensures the lifting of the single cabinet component under a cable control angle of 90°.

• When transporting the Sunny Central, only use the original SMA or cabinet manufacturer eyelets. The eyelets are not included in the delivery, you can order these from SMA Solar Technology.

• All Sunny Centrals are delivered on high-quality pallets.

• The Sunny Central must not be tilted during transport.

• Only individual cabinet units can be transported.

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SMA Solar Technology AG Appendix A: Transport instructions

7.1 Overview of transport possibilities

FORBIDDEN PERMITTED AND MUST BE OBSERVED

“Tilting”

“suspending from eyelets”

“loading from the side”

enter of gravity marking

"crane fork"

with “forklift/pallet truck”

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Appendix A: Transport instructions SMA Solar Technology AG

Transport using a fork lift

All Sunny Centrals may be transported with a forklift.

Transport using a crane fork

All Sunny Centrals may be transported with a crane fork.

Transport using eyelets

Single cabinets are securely transported with eyelets and a crane rack. The transport eyelets are not included in the delivery. On request, you can order them free of charge.

In case of symmetrical load, the following admissible total loads are valid:

• with 45° cable control angle 4800 N,

• with 60° cable control angle 6400 N,

• with 90° cable control angle 13600 N

Transport eyelet PS 4568.000:

For the crane transport of a

Sunny Central

If not already included in the

delivery, transport eyelets can

be ordered free of charge at

SMA Solar Technology AG.

Transport eyelets are only

included in the delivery if

ordered on request.

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SMA Solar Technology AG Appendix A: Transport instructions

Overview of transport possibilities of the individual cabinets.

Inverter type Transport using a

fork lift

Transport using a crane fork

Transport using eyelets with crane rack

Sunny Central 100

yes yes no

outdoor Sunny Central 100

yes yes no

indoor Sunny Central 100HE

yes yes no

outdoor Sunny Central 100HE

yes yes no

indoor Sunny Central 100LV yes yes yes Sunny Central 125 LV yes yes yes Sunny Central 150 yes yes yes Sunny Central 200 yes yes yes Sunny Central 200HE yes yes yes Sunny Central 250 yes yes no Sunny Central 250HE yes yes yes Sunny Central 350 yes yes no Sunny Central 350HE yes yes yes Sunny Central 500HE yes yes no Sunny Central 560HE yes yes no

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Contact SMA Solar Technology AG

8 Contact

If you have technical problems with our products, contact the SMA Service Line. We require the following information in order to provide you with the necessary assistance:

• Inverter type

• Type and number of modules connected

•Communication method

• Sunny Central Serial number

• Sunny Central failure or warning number

• Sunny Central display message

SMA Solar Technology AG

Sonnenallee 1 34266 Niestetal, Germany Tel.: +49 (561) 95 22 - 299 Fax: +49 (561) 95 22 - 3299 SunnyCentral.Service@SMA.de www.SMA.de

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SMA Solar Technology AG Appendix A - Mechanical data

9 Appendix A - Mechanical data

Ach

e i

s g

e s c h

l t u

ete p t s

n c h

t e

e r r S p a n n u n g

9.1 Dimensions

Sunny Central Length A1 (mm) Length A2 (mm) Width B (mm) Height C (mm)

SC 100LV 800 1200 800 2100 SC 125LV 800 1200 800 2100 SC 150 Standard 800 1200 800 2100 SC 200 Standard 800 1200 800 2100 SC 200HE 800 1200 800 2100 SC 250 Standard 1200 1200 800 2100 SC 250HE 1200 1200 800 2100 SC 350 Standard 1600 1200 800 2100 SC 350HE 1600 1200 800 2100 SC 500HE 1600 1200 800 2100 SC 560HE 1600 1200 800 2100

A1: DC/inverter cabinet A2: AC cabinet

9.2 Weight

Sunny Central Weight A1 (kg) Weight A2 (kg) Total weight (kg)

SC 100LV 570 890 1460 SC 125LV 570 890 1460 SC 150 Standard 500 1000 1500 SC 200 Standard 500 1100 1600 SC 200HE 570 330 900 SC 250 Standard 760 1300 2060 SC 250HE 760 350 1110 SC 350 Standard 1100 1700 2800 SC 350HE 700 760 1460

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Appendix A - Mechanical data SMA Solar Technology AG

Sunny Central Weight A1 (kg) Weight A2 (kg) Total weight (kg)

SC 500HE 820 1320 2140 SC 560HE 820 1320 2140

A1: DC/inverter cabinet A2: AC cabinet

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SMA Solar Technology AG Appendix B - Minimum Clearance

10 Appendix B - Minimum Clearance

Ach t

e i

u s g

e s c h H a a

l t

ete p t s

n c h u a n

l t

t e

e r

r S p a n n

Sunny Central D (mm) E (mm) F (mm) G (mm) H (mm)

SC 100LV 600*/

100** SC 125LV air outlet (to the rear) SC 125LV

600*/

100**

100 100 400 10 1100

100 200 600*/

50**

100 200 600*/

50**

1100

air outlet (above) SC 150 Standard air outlet (to the rear) SC 150 Standard

600*/

100**

100 200 600*/

50**

1100

100 100 400 10 1100

air outlet (above) SC 200 Standard

air outlet (to the rear) SC 200 Standard

600*/

100**

100 200 600*/

50**

1100

100 100 400 10 1100 air outlet (above) SC 200HE air outlet (to the rear) SC 200HE

600*/ 100**

100 200 600*/

50**

1100

100 100 400 10 1100 air outlet (above) SC 250 Standard air outlet (to the rear) SC 250 Standard

600*/ 100**

100 200 600*/

50**

1100

100 100 400 10 1100 air outlet (above)

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Appendix B - Minimum Clearance SMA Solar Technology AG

Sunny Central D (mm) E (mm) F (mm) G (mm) H (mm)

SC 250HE air outlet (to the rear)

SC 250HE

600*/ 100**

100 200 600*/

50**

1100

100 100 400 10 1100 air outlet (above)

SC 350 Standard 100** 100 400 50** 1100 SC 350HE 100** 100 400 50** 1100 SC 500HE 100** 100 400 50** 1100 SC 560HE 100** 100 400 50** 1100

* Distance to a closed building wall ** Distance to a building wall with air grills

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SMA Solar Technology AG Appendix C - Air volume

11 Appendix C - Air volume

Sunny Central DC cabinet

m³/h

SC 100LV 1300 2000 3300 SC 125LV 1300 2000 3300 SC 150 Standard 1300 2000 3300 SC 200 Standard 1300 2000 3300 SC 200HE 1300 1300 2600 SC 250 Standard 2200 2000 4200 SC 250HE 2200 1300 3500 SC 350 Standard 1300 2600 2600 6500 SC 350HE 1300 2600 1300 5200 SC 500HE 1300 3900 2600 7800 SC 560HE 1300 3900 2600 7800

Inverter cabinet

m³/h

AC cabinet

m³/h

Total volume

m³/h

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Appendix D - Cable cross section and Torque SMA Solar Technology AG

12 Appendix D - Cable cross section and Torque

12.1 DC connection

Sunny Central DC fuses Max. cross section Torque

SC 100LV 5 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 125LV 5 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 150 Standard 5 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 200 Standard 5 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 200HE 5 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 250 Standard 8 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 250HE 8 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 350 Standard 12 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 350HE 12 M10

up to 240 mm², slim

30 - 35 Nm

cable lug

SC 500HE 1 x Cu per pole M12

3 x 240 mm², slim

74 Nm

cable lug per pole

SC 560HE 1 x Cu per pole M12

3 x 240 mm², slim

74 Nm

cable lug per pole

Screw at NH fuse holder

Copper bus bar perforated

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SMA Solar Technology AG Appendix D - Cable cross section and Torque

12.2 AC connection

Sunny Central AC terminals Max. cross

section

SC 100LV 5 x WFF 185 M12 SC 125LV 5 x WFF 185 M12 SC 150 Standard 5 x WFF 185 M12 SC 200 Standard 5 x WFF 185 M12 SC 200HE Isolator M12 SC 250 Standard 5 x WFF 185 M12 SC 250HE Isolator M12 SC 350 Standard 3 x Cu Cu M12

up to 240 mm² 14 - 31 Nm up to 240 mm² 14 - 31 Nm up to 240 mm² 14 - 31 Nm up to 240 mm² 14 - 31 Nm up to 240 mm² 32 Nm up to 240 mm² 14 - 31 Nm up to 240 mm² 32 Nm

3 x 240 mm² per

phase

SC 350HE 3 x Cu Cu M12

3 x 240 mm² per

phase SC 500HE Isolator M16 SC 560HE Isolator M16

Screw at NH fuse holder

Copper bus bar perforated

Bolt clamp

Screw at fuse switch disconnector

EriFlex bus bar perforated

up to 300 mm² 210 Nm up to 300 mm² 210 Nm

Torque

74 Nm

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Appendix D - Cable cross section and Torque SMA Solar Technology AG

88 SC125_560HE-IEN083220 Installation Guide

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SMA Solar Technology AG Appendix D - Cable cross section and Torque

Installation Guide SC125_560HE-IEN083220 89

Page 90

Appendix D - Cable cross section and Torque SMA Solar Technology AG

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SMA Solar Technology AG Legal Restrictions

The information contained in this document is the property of SMA Solar Technology AG. Publishing its content, either partially or in full, requires the written permission of SMA Solar Technology AG. Any internal company copying of the document for the purposes of evaluating the product or its correct implementation is allowed and does not require permission.

Exclusion of liability

The general terms and conditions of delivery of SMA Solar Technology AG shall apply. The content of these documents is continually checked and amended, where necessary. However, discrepancies cannot be

excluded. No guarantee is made for the completeness of these do cuments. The latest version is available online at www.SMA.de or from the usual sales channels.

Guarantee or liability claims for damages of any kind are excluded if they are caused by one or more of the following:

• Damages during transportation

• Improper or inappropriate use of the product

• Operating the product in an unintended environment

• Operating the product whilst ignoring relevant, statutory safety regulations in the deployment location

• Ignoring safety warnings and instructions contained in all documents relevant to the product

• Operating the product under incorrect safety or protection conditions

• Altering the product or supplied software without authority

• The product malfunctions due to operating attached or neighboring devices beyond statutory limit values

• In case of unforeseen calamity or force majeure The use of supplied software produced by SMA Solar Technology AG is subject to the following conditions:

• SMA Solar Technology AG rejects any liability for direct or indirect damages arising from the use of software developed by SMA Solar Technology AG. This also applies to the provision or non-provision of support activities.

• Supplied software not developed by SMA Solar Technology AG is subject to the respective licensing and liability agreements of the manufacturer.

SMA Factory Warranty

The current guarantee conditions come enclosed with your device. These are also available online at www.SMA.de and can be downloaded or are available on paper from the usual sales channels if required.

Trademarks

All trademarks are recognized even if these are not marked separately. Missing designations do not mean that a product or brand is not a registered trademark.

SMA Solar Technology AG

Installation Guide SC125_560HE-IEN083220 91

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SMA Solar Technology AG

www.SMA.de

Sonnenallee 1

34266 Niestetal, Germany

Tel.: +49 561 9522 4000

Fax: +49 561 9522 4040

E-Mail: Vertrieb@SMA.de

Freecall: 0800 SUNNYBOY

Freecall: 0800 78669269

SMA SC 100LV-560HE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Notes on this Manual

1.1 Validity

1.2 Target Group

1.3 Storage of the Manuals

1.4 Symbols Used

2 Safety

2.1 Appropriate Usage

2.2 Safety Instructions

2.2.1 Personnel

2.2.2 Installation

2.2.3 Special Hazards of Photovoltaic Systems

2.2.4 Electrical Connection

2.2.5 Power Supplies

2.2.6 Disconnecting the device

2.2.7 General Information

3 Delivery

3.1 Transport

3.1.1 Transport Possibilities

3.2 Identifying the Sunny Central

3.2.1 Checking for Transport Damages

3.2.2 Storage

4 Mounting the Device

4.1 Installation Site Requirements

4.1.1 Foundation

4.1.2 Distance to the wall

4.1.3 Inverter Protection Rating / EMC / Sound Levels

4.1.4 Electrical Operating Room

4.1.5 Ventilation

4.2 On-Site Inverter Installation

4.2.1 Remove transport locks

4.2.2 Mechanical coupling

4.2.3 Anchorage to the ground or wall

5 Electrical Connection

5.1 Internal Connections

5.1.1 Power cabling between sine filter and transformer

5.1.2 HE version: Power cable connection

5.1.3 PE connection between AC cabinet and DC / inverter cabinet

5.1.4 Control lines at the transfer terminal strip

5.1.5 Connecting Sunny Central Control to power unit

5.1.6 Internal control lines of the power unit

5.1.7 Communication for insulation monitoring

5.1.8 Installing internal temperature sensor

5.1.9 Team cabling (optional)

5.1.10 EVR Cabling (optional)

5.1.11 Sunny Central for installation near the sea (optional)

5.2 External Connections

5.2.1 AC grid-connection standard devices

5.2.2 AC grid connection of HE versions

5.2.3 AC grid connection with MV stations

5.2.4 Connection PE rail with HE version

5.2.5 AC control voltage

5.2.6 Handling the Connection Terminals Control voltage

5.2.7 DC connection

5.2.8 Team Power Cabling

5.2.9 External messages and signals

5.2.10 Sensors and digital outputs

5.2.11 Shield Contact Handling Instructions

5.2.12 Serial Interfaces

5.2.13 Emergency-stop cabling

5.2.14 Surge protection

6 Commissioning

6.1 Requirements for commissioning

6.2 Cabling Checks

6.2.1 Cabling Check AC Grid Connection

6.2.2 Cabling Check DC Power Connections

6.2.3 Cabling Check Serial Interfaces

6.2.4 Emergency-stop cabling

6.2.5 Settings for thermostats and hygrostat

6.3 Switch On

7 Appendix A: Transport instructions

7.1 Overview of transport possibilities

8 Contact

9 Appendix A - Mechanical data

9.1 Dimensions

9.2 Weight

10 Appendix B - Minimum Clearance